1 files changed, 211 insertions, 0 deletions
diff --git a/nvim/snips/tex/expressions.lua b/nvim/snips/tex/expressions.lua
new file mode 100644
index 0000000..2bb6d29
--- /dev/null
+++ b/nvim/snips/tex/expressions.lua
@@ -0,0 +1,211 @@
+local n = require("luasnip-nodes")
+local h = require("luasnip-helpers")
+
+local closer = function (open)
+    if open == "(" then
+        return ")"
+    elseif open == "\\{" then
+        return "\\}"
+    elseif open == "{" then
+        return "}"
+    elseif open == "[" then
+        return "]"
+    elseif open == "|" then
+        return "|"
+    elseif open == "\\langle" then
+        return "\\rangle"
+    else
+        return nil
+    end
+end
+
+local parens = function(_, parent)
+    local open = parent.captures[1]
+
+    if open == "{" then open = "\\{" end
+    if open == "'a" then open = "\\langle" end
+
+    local node = n.sn(1,
+        n.fmta("\\left<> <> \\right<>",
+            { n.t(open), n.i(1), n.t(closer(open)) })
+    )
+    return node
+end
+
+return {
+    n.s({trig="'{", snippetType="autosnippet"},
+        n.fmta("\\{ <> \\}", { n.i(1) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig=[[\\left([\(\[\{|]|'a)]], trigEngine="ecma", wordTrig=false, snippetType="autosnippet"},
+        { n.d(1, parens) },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="'lf", snippetType="autosnippet"},
+        { n.t("\\left") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="'ang", snippetType="autosnippet"},
+        n.fmta("\\langle <> \\rangle", { n.i(1) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="dsum", snippetType="autosnippet", priority=200},
+        n.fmta("\\sum_{<>=<>}^{<>}",
+            { n.i(1), n.i(2), n.i(3) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="sum", snippetType="autosnippet", priority=100},
+        { n.t("\\sum") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="od", snippetType="autosnippet"},
+        n.fmta("\\od[]{<>}{<>}",
+            { n.i(1), n.i(2) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="oD", snippetType="autosnippet"},
+        n.fmta("\\od[<>]{<>}{<>}",
+            { n.i(1), n.i(2), n.i(3) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="pd", snippetType="autosnippet"},
+        n.fmta("\\pd[]{<>}{<>} ",
+            { n.i(1), n.i(2) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="pD", snippetType="autosnippet"},
+        n.fmta("\\pd[<>]{<>}{<>} ",
+            { n.i(1), n.i(2), n.i(3) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="dint", snippetType="autosnippet", priority=200},
+        n.fmta("\\int_{<>}^{<>}",
+            { n.i(1, "-\\infty"), n.i(2, "\\infty") }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="int", snippetType="autosnippet", priority=100},
+        { n.t("\\int") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="oint", snippetType="autosnippet", priority=100},
+        { n.t("\\oint") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="doint", snippetType="autosnippet", priority=200},
+        n.fmta("\\oint_{<>}^{<>}",
+            { n.i(1), n.i(2) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="df", wordTrig=false, snippetType="autosnippet"},
+        { n.t("\\diff") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="pf", wordTrig=false, snippetType="autosnippet"},
+        { n.t("\\pdiff") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "tii", snippetType="autosnippet"},
+        n.fmta("\\textit{<>}",
+            { n.d(1, h.get_visual) }),
+        { condition = h.in_text }
+    ),
+    n.s({trig = "tbb", snippetType="autosnippet"},
+        n.fmta("\\textbf{<>}",
+            { n.d(1, h.get_visual) }),
+        { condition = h.in_text }
+    ),
+    n.s({trig = "xb", snippetType="autosnippet"},
+        n.fmta("\\text{\\textbf{<>}}",
+            { n.d(1, h.get_visual) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "tuu", snippetType="autosnippet"},
+        n.fmta("\\underline{<>}",
+            { n.d(1, h.get_visual) }),
+        { condition = h.in_text }
+    ),
+    n.s({trig = "=", snippetType="autosnippet"},
+        { n.t("\\item ") },
+        { condition = h.in_itemize * h.line_begin }
+    ),
+    n.s({trig = "=", snippetType="autosnippet"},
+        { n.t("\\item ") },
+        { condition = h.in_enumerate * h.line_begin }
+    ),
+    n.s({trig = "ceil", snippetType="autosnippet"},
+        n.fmta("\\left\\lceil <> \\right\\rceil",
+            { n.i(1) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "floor", snippetType="autosnippet"},
+        n.fmta("\\left\\lfloor <> \\right\\rfloor",
+            { n.i(1) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="sr", snippetType="autosnippet", wordTrig=false},
+        { n.t("^2") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="cb", snippetType="autosnippet", wordTrig=false},
+        { n.t("^3") },
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="tf", snippetType="autosnippet", wordTrig=false},
+        n.fmta("^{<>}",
+            { n.i(1) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "rf", wordTrig=false, snippetType="autosnippet"},
+        n.fmta("_{<>}",
+            { n.i(1) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig="vm", snippetType="autosnippet"},
+        n.fmta("$<>$",
+            { n.i(1) }),
+        { condition = h.in_text }
+    ),
+    n.s({trig="dm", snippetType="autosnippet"},
+        n.fmta(
+        [[
+            \[
+            <>
+            \]
+            <>
+        ]],
+            { n.i(1), n.i(0) }),
+        { condition = h.in_text }
+    ),
+    n.s({trig=[[([A-Za-z])(\d)]], trigEngine="ecma", wordTrig=false, snippetType="autosnippet", priority=100},
+        n.fmta("<>_<>",
+            { n.f(function(_, parent) return parent.captures[1] end),
+              n.f(function(_, parent) return parent.captures[2] end) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig=[[([A-Za-z])_(\d{2})]], trigEngine="ecma", wordTrig=false, snippetType="autosnippet"},
+        n.fmta("<>_{<>}",
+            { n.f(function(_, parent) return parent.captures[1] end),
+              n.f(function(_, parent) return parent.captures[2] end) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "tx", snippetType="autosnippet"},
+        n.fmta("\\text{<>}",
+            { n.i(1) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "sq", snippetType="autosnippet"},
+        n.fmta("\\sqrt{<>}",
+            { n.d(1, h.get_visual) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "map", snippetType="autosnippet"},
+        n.fmta("<> : <> \\to <>",
+            { n.i(1), n.i(2), n.i(0) }),
+        { condition = h.in_mathzone }
+    ),
+    n.s({trig = "eval", snippetType="autosnippet"},
+        n.fmta("\\eval{<>}",
+            { n.d(1, h.get_visual) }),
+        { condition = h.in_mathzone }
+    ),
+}